I broke my shoulder when I was younger, and my mobility became a serious problem. Gentle stretches for myself. Take your arm and extend it fully out in front of a wall or door, and slowly move your arm all the way up the door. That's one that I use for my hurt shoulder.
I wouldn’t say any specific stretches but this always helps me if I have any aches. Just roll your shoulders until you can’t here anything or you feel comfortable. And for chest go on the ground like you would a dog and make you chest go forward and back and do this at least 30 times and then all aches away!